问题
选择题
________ material used for running tracks in schools across China may be ________ danger to children's health.
A．/；a
B．The；a
C．/；the
D．The；the
答案
答案：B
a danger为抽象名词具体化的用法。
搜题请搜索小程序“爱下问搜题”
________ material used for running tracks in schools across China may be ________ danger to children's health.
A．/；a
B．The；a
C．/；the
D．The；the
答案：B
a danger为抽象名词具体化的用法。